JPH0435790A - Water treating equipment - Google Patents

Abstract

PURPOSE:To obtain the miniature equipment enhanced in treatment capacity by providing a stagnation part in a concentric circular shape to the outside of an ozone contact part and thereby zigzaging water to be treated which is discharged from the lower part of the ozone contact part in the vertical directions and discharging treated water to the outside. CONSTITUTION:Water to be treated is introduced into a stagnation part 7 from an ozone contact part 5 and raised between an inner cylinder 3 and an intermedi ate cylinder 10. Furthermore, the same is lowered between the intermediate cylinder 10 and an external cylinder 4 and discharged as treated water to the outside from a drainage pipe 8. Therefore, even when a part of ozonized air blown out from a diffuser 6 is discharged to the stagnation part 7, the ozonized air is brought into contact with the water to be treated between the intermediate cylinder 10 and the external cylinder 4 wherein the water to be treated becomes downflow. Accordingly, the ozonized air is brought into contact with the water to be treated in both the ozone contact part 5 and the stagnation part 7. Since the contact efficiency of the water to be treated and the ozonized air is en hanced, treatment capacity is enhanced without making the equipment large- sized.

Description

Detailed Description of the Invention [Purpose of the Invention (Industrial Application Field) The present invention introduces water to be treated into an ozone reaction tank, and brings the introduced water into contact with ozonized air to cause the water to be treated to be treated. The present invention relates to a water treatment device that performs ozone treatment on suspended matter in treated water.

(Prior Art) Conventionally, this type of water treatment apparatus is constructed by connecting a water introduction pipe 1 to be treated to the upper part of an ozone reaction tank 2, as shown in FIG. The above-mentioned thin reaction tank 2 has a double cylindrical structure consisting of an inner cylinder 3 and an outer cylinder 4, and inside the inner cylinder 3, the treated water introduced from the treated water introduction pipe 1 is mixed with ozonized air. The ozone contact portion 5 to be brought into contact has been formed. An aeration pipe 6 as an ozonized air blowing means is disposed at the lower part of the ozone contact part 5, and the water to be treated introduced from the water introduction pipe 1 is supplied with ozonized air ( It descends while coming into contact with air bubbles) and flows out into a retention section 7 formed on the outside of the inner cylinder 3.

Further, a drain pipe 8 is connected to the upper part of the outer cylinder 4, and the water to be treated that has flowed into the retention part 7 from the ozone contact part 5 rises between the inner cylinder 3 and the outer cylinder 4, and flows through the drain pipe. 8, the water is discharged outside as treated water. Incidentally, an exhaust ozone decomposition tower 9 is connected to the upper part of the ozone reaction tank 2, which decomposes ozone that is not dissolved in the water to be treated in the ozone contact section 5.

(Problems to be Solved by the Invention) By the way, in the conventional water treatment device described above, a part of the ozonized air ejected from the aeration pipe 6 flows into the retention section 7, rides on the flow of the water to be treated, and goes directly to the outside. Since the water is discharged, the water to be treated and the ozonized air come into contact only at the ozone contact portion 5, resulting in a problem that the treatment capacity is low. Therefore, it is conceivable to increase the height of the ozone reaction tank 2 in order to increase the contact efficiency between the water to be treated and the ozonized air, but doing so has the problem of increasing the size of the apparatus.

The present invention has been made in view of these problems, and its purpose is to provide a water treatment device that is small in size and has a high processing capacity.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the present invention provides an ozone contact section having a cylindrical structure into which water to be treated is introduced from the upper part, and a cono-ozone contact section provided at the lower part of the ozone contact section. ozonated air blowing means, and a retention section that is provided concentrically outside the ozone contact section and that causes the water to be treated that flows out from the lower part of the ozone contact section to be discharged to the outside in a vertical meandering direction. It is.

(Function) In the present invention, the water to be treated that flows out from the lower part of the ozone contact part is made to meander in the vertical direction in the retention part and is discharged to the outside, so that the ozonized air that has flowed out to the retention part comes into contact with the water to be treated. can be done. Therefore, the ozonated air can be brought into contact with the water to be treated in both the ozone contact part and the retention part, and the contact efficiency between the water to be treated and the ozonized air can be increased without increasing the height of the ozone reaction tank. can be increased.

(Embodiment) FIG. 1 is a schematic diagram of a water treatment device showing an embodiment of the present invention. This water treatment device, like the conventional device shown in FIG. It is connected to the upper part of the reaction tank 2. The ozone reaction tank 2 has a triple cylindrical structure with an intermediate cylinder 10 between an inner cylinder 3 and an outer cylinder 4, and the inside of the inner cylinder 3 contains the water to be treated introduced from the water introduction pipe 1. An ozone contact portion 5 is formed for bringing the ozonized air into contact with the ozonized air. An aeration pipe 6 as an ozonized air blowing means is disposed at the lower part of the ozone contact part 5, and the water to be treated introduced from the water introduction pipe 1 is supplied with ozonized air ( It descends while coming into contact with air bubbles),
The water flows out into a retention section 7 formed on the outside of the inner cylinder 3.

In addition, a drain pipe 8 is connected to the lower part of the outer @ 4, and the water to be treated that has flowed from the ozone contact part 6 to the retention part 7 rises between the inner cylinder 3 and the intermediate cylinder 10, and then continues to the intermediate cylinder 10. The water descends between the tube 10 and the outer tube 4 and is discharged to the outside through a drain pipe 8 as treated water. In addition, ozone reaction tank 2
An exhaust ozone decomposition tower 9 is connected to the upper part of the ozone contacting section 5 to decompose ozone that is not dissolved in the water to be treated.

In the water treatment apparatus configured as described above, as described above, the water to be treated that has flowed into the retention section 7 from the ozone contact section 6 rises between the inner cylinder 3 and the intermediate cylinder 10, and then rises between the inner cylinder 3 and the intermediate cylinder 10. Since it descends between the outer cylinder 4 and is discharged to the outside as treated water through the drain pipe 8, even if some of the ozonized air ejected from the diffuser pipe 6 flows into the retention section 7, the water to be treated still descends. Ozonated air can be brought into contact with the water to be treated between the intermediate cylinder 10 and the outer cylinder 4, which serve as a flow.

Therefore, in the above embodiment, ozonated air can be brought into contact with the water to be treated in both the ozone contact section 5 and the retention section 7,
Since the contact efficiency between the water to be treated and the ozonized air can be increased without increasing the height of the ozone reaction tank 2,
Processing capacity can be improved without increasing the size of the device.

Note that the present invention is not limited to the above embodiments.

For example, in the above embodiment, the retention section 7 has a double cylindrical structure, but any structure may be used as long as the water to be treated is meandered in the vertical direction and discharged to the outside.

[Effects of the Invention] As explained above, the water treatment device according to the present invention has an ozone contact portion having a cylindrical structure into which water to be treated is introduced from the upper part, and an ozonized air jet provided at the bottom of the ozone contact portion. and a retention section that is provided concentrically outside the ozone contact section and that causes the water to be treated flowing out from the lower part of the ozone contact section to be meandered in the vertical direction and discharged to the outside.

Therefore, the ozonated air can be brought into contact with the water to be treated in both the ozone contact part and the retention part, and the contact efficiency between the water to be treated and the ozonized air can be increased without increasing the height of the ozone reaction tank. Therefore, it is possible to provide a water treatment device that is small and has high processing capacity. .

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a water treatment device showing an embodiment of the present invention;
FIG. 2 is a schematic diagram of a conventional water treatment device. 1... Water introduction pipe to be treated, 2... Ozone reaction tank, 3...
...Inner cylinder, 4...Outer cylinder, 5...Ozone contact part, 6.
... Diffuser pipe, 7... Retention part, 8... Drain pipe, 9...
- Exhaust ozone decomposition tower, 10... intermediate cylinder. Applicant's agent Patent attorney Takehiko Suzue ~ α) Lotto ψ ■

Claims (1)

[Claims] An ozone contact part having a cylindrical structure into which water to be treated is introduced from the upper part, an ozonized air blowing means provided at the bottom of the ozone contact part, and an ozone contact part provided concentrically outside the ozone contact part. What is claimed is: 1. A water treatment device comprising: a retention section for discharging to-be-treated water flowing out from a lower part of the device to the outside in a meandering manner in a vertical direction.